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Finding the Fourth Proportional to 74,777.76, 103,189.64 and 44,562.40

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Solution

The fourth proportional to 74,777.76, 103,189.64 and 44,562.40 is: 61,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,777.76 : 103,189.64 = 44,562.40 : x
  2. Step 2: Convert to fraction form
    74,777.76/103,189.64 = 44,562.40/x
  3. Step 3: Cross multiply
    74,777.76x = 103,189.64 × 44,562.40
  4. Step 4: Simplify right side
    74,777.76x = 4,598,378,013.54
  5. Step 5: Solve for x
    x = 4,598,378,013.54/74,777.76
  6. Step 6: Final answer
    x = 61,493.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.